Did it work?
I have exactly the same issue: old MCE remote (Acer RC6) that i try to make work on WIn7 HTPC - when i first install the GUI and first tried to configure the remote everything seemed to work fine - I think i remember it was v.3.1 - then i upgraded the FW to 3.5 as I thought it would give a config that would show the WMC button ( I didn't know much a week ago) - and since then impossible to record full config without having up and down mixed up - you record 'up' and in fact both up and down presses send signal to 'up' , or I record 2 and then when pressing '2' or '3' it will mark 2 on Media center TV
i've tried to delete config, uninstall / reinstall driver , uninstall /reinstall GUI, tried desperately to find FW 3.1 that I know worked at the beginning
I was going crazy until I found this post...
I will try to config remote on my laptop and see what it does once flirc plugged into the HTPC